was sagt ein großes blutbild aus — what symptoms are typical?

The question about what a complete blood count (CBC) reveals and typical symptoms is not addressed in the provided context, which focuses on genetic tests, vitamin D, and microbiome. A CBC provides information on red and white blood cells, hemoglobin, hematocrit, and platelets. Typical symptoms that might prompt a CBC include fatigue, weakness, signs of infection, bleeding, or unexplained inflammation. Interpretation should always be done by a physician. Evidence: practice standard, no specific sources in context.